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An engine pulls a car of mass 1500 kg on a level road at a constant speed of 5 m/s. If the frictional force is 1500 N, what power does the engine generate?
(a) 5.0 kW (b) 7.5 kW (c) 10 kW (d) 12.5 kW

Chemistry

The brown ring complex compound is formulated as. The oxidation state of iron is
(a) 1 (b) 2 (c) 3 (d) 0

Mathematics

The set is equal to

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